99729856 has 14 divisors (see below), whose sum is σ = 197901560. Its totient is φ = 49864896.

The previous prime is 99729823. The next prime is 99729887. The reversal of 99729856 is 65892799.

It is a junction number, because it is equal to n+sod(n) for n = 99729797 and 99729806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 779076 + ... + 779203.

Almost surely, 2^99729856 is an apocalyptic number.

It is an amenable number.

99729856 is a deficient number, since it is larger than the sum of its proper divisors (98171704).

99729856 is a wasteful number, since it uses less digits than its factorization.

99729856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558291 (or 1558281 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 99729856 is about 9986.4836654350. The cubic root of 99729856 is about 463.7405406343.

The spelling of 99729856 in words is "ninety-nine million, seven hundred twenty-nine thousand, eight hundred fifty-six".